Has any one come accross this before?

Server SYD-SRV2 halted Wednesday, 23 March 2011 10:58:49.375 am
Abend 1 on P00: Server-5.70.03-0: NCPIP: ReplyDisgard overflowed reply buffer!!

Cannot find a reference to this, and has just started happening out of the blue.

Thanks.